Which of the following best describes a primary nutrient deficiency?
                                
                                
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                                    4 min read                                
                            
                                According to the World Health Organization, micronutrient deficiencies affect more than 2 billion people worldwide. Addressing this global health concern starts with understanding the causes and differences between types of malnutrition, specifically answering: Which of the following best describes a primary nutrient deficiency? A primary deficiency is directly caused by a lack of nutrients in one's diet.